Test case for <option {selected}>
We TreeWalk attributes but do not check for the case where the attribute name is the token.
<option {selected}>foo</option>
@VicenteRD confirmed it. We NEED this feature if we want to have logical display of elements within the page.
Am curious @VicenteRD does an <img src='' hidden> make a network request for the (blank) resource?
@VicenteRD seems like src='' DOES NOT attempt to fetch a blank resource. I guess we got the green light ✅


Seems like empty src='' works in browsers but breaks the spec.
Can also use Data URIs as a "default" but not sure what one. @VicenteRD that's our homework.
- (kinda dated) - http://probablyprogramming.com/2009/03/15/the-tiniest-gif-ever
- https://codepen.io/tigt/details/OXJZPa
- http://blog.teamtreehouse.com/using-data-uris-speed-website
- http://stackoverflow.com/questions/6018611/smallest-data-uri-image-possible-for-a-transparent-image